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HDMI stands for High Definition Multimedia Interface. Along with the Composite RCA, HDMI is one of the devices' two video outputs. It provides high quality digital video.

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Long running raspberry-pi not detected by HDMI monitor [duplicate]

I'm running a process long term on the raspberry pi. I disconnect keyboard + hdmi cable When I want to check on it, I plug in keyboard + hdmi, press a key button then the screen comes up. I have ...
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1answer
43 views

Couldn't get a display on the screen when using the RPi

I had a long time I didn't get my hand on the RPi. I got the Emlid image burned on a 8gb micro sdcard using the dd command. I have the pi connected to a the screen using HDMI to VGI cable, but I get ...
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1answer
27 views

Why does screen go blank while wifi data is being transmitted?

I got a Raspberry Pi 3 B+ with 2.5A power supply that came with it. I've connected a VGA monitor (via an HDMI-VGA adapter) and keyboard to it, and connected it to the WiFi. From the beginning, the ...
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8 views

Output in PulseAudio only switchable when running in root account

I'm trying to have PulseAudio play sound through the HDMI port. Sadly this doesn't work, when loggen in as a normal user. The green tick is non existent in all accounts, but the root account, which ...
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1answer
22 views

Is there a way to detect if the AUX port of the Raspberry Pi 3 Model B+ is in use?

We are trying to detect if the AUX (3.5mm) port of the Raspberry Pi is in use so we can automatically swap the output sound to either that or HDMI. If there is no straight answer, are there any ...
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38 views

HDMI-CEC: switch the device to the port where Raspberry is connected

I am using my Raspberry only for a Spotify connect client (Raspotify), the device connects to an AV Receiver which has a number of HDMI ports. After 2 days of trial and error I managed to figure out ...
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48 views

Raspberry Pi 3 Model B+ goes to black screen after a short while of inactivity

It ranges between 10 to 30 minutes. It is attached to a TV via HDMI. The monitor will go black. Moving the mouse of tapping the keyboard of the Raspberry Pi will "wake up" the screen pretty quickly. ...
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34 views

Drive a 73 inch monitor

Can the HDMI output of Pi3B+ drive a 73 inch DLP TV (that accepts HDMI input) as a monitor? I feel silly asking, but if anyone will know it's this group
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65 views

How to change TV input to raspberry pi using cec?

The question is quite simple: how can I make the Raspberry Pi the active video output on my TV using cec? I've spent many hours now trying to find a solution, but the answer still eludes me. I've ...
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0answers
19 views

3.5in TFT screen hat and Raspberry Pi 3+b

I'm trying to understand something about the MPI3508 screen I purchased (https://www.amazon.ca/dp/B07DQKQG6X). I tried powering it via usb and connected a PC in its HDMI input and got it working (the ...
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1answer
70 views

How to start xorg on a physically connected display via SSH?

The pi is configured to start into text mode so that no xorg libraries are loaded during normal operation. Yet I would like to be able to occasionally run a xorg desktop session when connected to an ...
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94 views

HDMI audio on Raspberry pi 3 b not working

I've already seen Audio over HDMI not working on Pi 3 (audio not working though HDMI, but working though speakers) but the actions described by @Vader did not work for me. The fact is that it ...
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0answers
23 views

Connecting 45pin RGB interface to Pi

I have a TFT display I am using which comes with a 45pin FPC connection. My current setup has this controlled through an adapter board (provided by the same supplier) which takes as inputs: SPI for ...
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1answer
52 views

Display controller for HDMI shows no signal only for Raspberry

I'm bought a (notebook) display LP171WP4 (TL)(01) and a display controller. Both are working if I connect it to my Macbook via HDMI. But with the Raspberry PI 3 B it doesn't work. The display is on ...
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192 views

OpenCV : Gtk-WARNING **: cannot open display:

I got a python script supposed to load a video. My Pi set up in headless mode and I would like not to use any X server for displaying the video but instead having the video displayed to the hdmi port....
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0answers
21 views

How to set up and connect raspberry pi 3 to laptop without HDMI and with HDMI? [duplicate]

I have tried to connect Raspberry pi 3 to my laptop using HDMI Cable, but when i connect HDMI Cable to my Laptop Nothing is happening. is this cable's Fault or anything else, please help me..
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58 views

How to troubleshoot a permanently blinking green light on a Pi3b?

The green light on a Pi3b is blinking permanently, even after bootup. It outputs two flashes at a time for as long as the power is on. Is this normal? If not, how do I troubleshoot this? Background ...
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51 views

raspberry pi model b+ Not booting

I recently bought a raspberry pi 3 b+ from amazon and when I got it delivered the package was already opened, so I just want to check if my raspberry is working or not so I formatted a compatible sd ...
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2answers
194 views

HDMI vs DSI, pros and cons? [closed]

I am curious what the main differences are between using the HDMI output or the DSI connector to hook up a screen? I understand that HDMI carries audio while the DSI ribbon connection will not, and ...
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1answer
18 views

how do i improve my HDMI resolution

my video resolution has always been great! but i downloaded a graphical interface for my pi Bluetooth and know i can not achieve a good picture on my hdmi to my tv the code was downloaded from sudo ...
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1answer
122 views

Showing an image on HDMI (DSI, HDMI screens connected)

I have a Raspberry Pi 3B device connected to a LCD '7 (7 inches LCD, its a touch screen I believe that's called DSI not sure) and also a HDMI screen. By default Raspbian considers the LCD as the ...
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1answer
61 views

Monitor Displaying “No Signal” with RetroPie at Powerup

I'm in the process of building a game console using RetroPie and a Raspberry Pi 3. I'm connecting the Pi to a monitor via HDMI, and I'm powering both using a power strip with an on/off switch, to ...
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0answers
157 views

raspberry pi with 4k screen @1080p resulotion

I'd like to use 4k screen with RPi. I know that RPi can't handle 4k resolution so that is why I'd like to set resolution to 1080p. Screen will be playing videos/images (both prepared at 1080p) and my ...
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0answers
18 views

Pi zero no HDMI output on laptop [duplicate]

I am new to Rasberry pi and trying the first boot . I have formatted the SD card and have copied Noobs . I can see activity LED glowing and remains stable after a while. I have connected HDMI cable to ...
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33 views

aplay with 3 outputs; choose any two? NOOBS

I have a 3B+. I need to be able to tell aplay, on each invocation, which of 3 audio outputs to use - headphone out, HDMI, or a bluetooth device. I can get any ONE of them to work by right clicking ...
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124 views

Raspberry Pi + Auvidea B101 for HDMI processing

I found this board trying to solve my problem. I have an anamorphic lens, which squeezes 2 times the frame's width on my camera. It looks stretched vertically on the camera monitor. Then to make it ...
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3answers
614 views

How to connect laptop as monitor to RPi Zero

I have a non-WiFi RPi Zero and no monitor, but I have a laptop. I saw on YouTube only for WiFi versions. Are there methods to connect it to laptop for that?
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42 views

Raspberry Pi (or an alternative) with HDMI auto-switch

I want to use Raspberry Pi 3 with an HDMI auto-switch, but I understand that the Raspberry Pi is an "always-on" computer, so auto-sensing doesn't work with it (the HDMI port keeps appearing active ...
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96 views

problem with video HDMI video output, distorted image

I am playing with a Rpi3 distro (Android Raspand) and I can't see anything. Image is twisted and distorted, please see how I am playing with config.txt following this guide https://raspberrypi....
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41 views

Missing L4 chip near HDMI port, not boot up and usb port no power output

My rpi work perfectly until I touch it, It not boot up then I found the L4 chip HDMI port is missing(I have touched HDMI port I think my fingernail pull it off...). I found that tiny chip in the box ...
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193 views

Enable HDMI port and force hot plug using crontab

I have a Pi connected to a Polaroid tv by HDMI cable in order to create a "Dakboard". Now when initially starting the project the TV was acknowledging a signal coming from the HDMI port (ie the no ...
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1answer
16 views

How to display native-resolution console on the monitor after booting without one?

I've started my Raspberry Pi Model B without having any monitor plugged. Then I plugged the HDMI monitor, but got no signal. So far I've been able to turn it on by using the command: tvservice --...
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1answer
36 views

Switch audio output not working

I'm using Raspbian Stretch Desktop for my Raspberry Pi 3B. I'm using a VGA screen with an HDMI to VGA adapter, so I want the jack to work as my main audio output. If I unplug the HDMI and reboot, the ...
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82 views

Displaying only video/image while python program running on background

I have a Raspberry Pi 3B with a Python3 code running 24/7. Right now, I'm running Raspbian Stretch desktop on console mode with no I/O. I only connect a screen via HDMI and an USB keyboard for ...
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31 views

OpenELEC - using HDMI alongside audio jack

I'm using Rpi 3 for OpenElec and Kodi. HDMI is connected to TV, and I wish to connect analog audio to home theater surround system. Is there a way to combine both outputs ? tnx
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1answer
89 views

SPI vs HDMI power consumption

I'm using a Pi Zero in a portable project and wondered if there were any power savings to be made by using an SPI display over a HDMI one or vice versa.
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35 views

Raspberry Pi HDMI blacking out and keyboard,mouse freezing

My setup consist a Raspberry Pi 3 model B running raspbian jessie. It is powered through GPIO header by a 5V, 5A switching regulator. I had a HDMI monitor, a flash drive and a USB hub connected with a ...
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1answer
148 views

Prevent text console from periodically switching to boot screen

I'm running arch linux (aarch64 kernel 4.16.9) on a Raspberry 3b, and using the text mode console on a monitor attached to the HDMI port. Everything basically works on the device, except for one ...
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42 views

Slo-mo “scan lines” on RPi 5" touchscreen

I bought a 5" touchscreen from Vilros (who are just reselling the one from Waveshare) and I plugged it in. At first, I had a weird glitch where a little more than half of the screen was Raspbian, and ...
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1answer
145 views

HDMI Desktop in portrait mode not working

I have a Raspberry Pi 3 connected to a Toshiba TV HDMI port, which I want to use in portrait mode think to display a restaurant menu. I have changed the /boot/config.txt and added the following: ...
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48 views

HDMI parameters for lcd display

I have bought a LCD display with HDMI input. The seller gave me a config.txt that may fit my display, but it does not work. I tried the display on a PC with Debian and Windows 10, it works fine. How ...
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1answer
137 views

Waveshare 4.3inch HDMI LCD shows blank white screen

I have a Raspberry Pi 3 model B running the latest version of Rasbian Stretch. Yesterday I've received my Waveshare 4,3 inch display. First thing I did was build it in my project, due to save height ...
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61 views

Using a screen with a resolution of 480 x 272

Currently I'm working on a project for my education. I want to use a screen with a resolution of 480 x 272 and it is connected straight to the HDMI port. The problem is that I can't get the view of ...
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248 views

Auto-detect HDMI on boot (touchscreen attached)

I'm using the 7" official Raspberry Pi touchscreen, attached with a ribbon, on an RPi 3 Raspbian Jesse. This screen does not support displaying on both it and HDMI output simultaneously, so I can only ...
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1answer
26 views

First time setup - no HDMI output

At first install I get no output to my monitor at all. Have tried two different monitors and two different HDMI cables. Black screen. I assume this must be a hardware error, or have I missed something?...
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1answer
48 views

RaspPi 3 unresponsive after HDMI cable swap

I’m running Kodi on a RaspPi3 as a media centre solution. The HDMI cable feeds into a 4-port HDMI switch to allow access to various other devices. I have a TV and a projector so that I have to change ...
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285 views

Detect TV remote buttons being pressed with CEC client

My TV supports CEC and is connected to my Raspberry Pi with HDMI. I've installed cec-client on the Pi and followed this tutorial, but it only explains how to turn the TV on and off with the Pi. What I ...
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1answer
357 views

Does display_rotate still work?

I'm trying to use this runtime config.txt parameter under Raspbian Stretch and an external LED monitor on the HDMI port to no effect. It's hard to tell from posts here and elsewhere if this setting ...
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1answer
18 views

LCD VGA Display goes blank on use of usb mouse on Pi 3

I have an old VGA monitor (Xerox XM7-19w which has its prime resolution as 1440x900 (i.e. WXGA) at 60Hz. I've connected my recently purchased Pi 3 (and recently purchased sdcard with Rasbian on it) ...
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138 views

After sometime Pi hdmi screen blank while display screen by fbi and video by omxplayer serially

I am running fbi and omxplayer serially and after fbi statement sufficient sleep by calculating total files multiply by image screen ON time fbi statement fbi -autozoom -norandom -timeout $timeout -...